Normally Claire its a blub thta has gone when the others flash quicker, check your rear front and side repeater first, if its not the blub in 1 of those places then the fuse is the newt thing, that should be under your bonnet with fuses written on the plastic top, take that off and it should say on the under side of the top which fuse does what, see which 1 it is then take it out and go to Halfords and ask them for that fuse.